Carbureter.



. A. MILLER.

CARBURETER.

APPLlCATlON FILED MAY20, 1914.

Patented May 16, 1916.

2 SHEETS-SHEET 1.

H. A. MILLER. CARBUREIER. APPLICATION FILED MAY 20, 1914. I

Patented May16,1916.

2 SHEETS-SHEET 2.

ATNT .rrria.

HARRY A. MILLER, or LOS ANGELES, CALIFORNIA, ASSIGNOR, BY MES-NE .AfiSIGN- MENTS, T0 MASTER CARBURETER COMPANY, or Los ANGELES, CALIFORNIA, .A

CORPORATION CALIFORNIA.

OARBURETER.

Specification of letters Patent.

Patented May 16, 1916.

Application filed May 20, 1914. Serial No. 839,732.

To all whom it may concern Be it known that I. HARRY A. MILLER, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Garbureter, of which the following is a specification. I

An object of this invention is to improve the construction of carburetors of the character disclosed in the prior application of Harry AjMiller and Frank M. Adamson, filed February 10, 1914, Serial No. 817 ,77 9.

The distributer of the carburetor which is located adjacent to the throttle is provided with a series of ducts or small passages, the discharge mouths of which are controlled by the throttle so that by adjusting the. angular position of the throttle more or less of the discharge ducts of the distributer may be opened for the passage of gasolene.

A further object of the invention is to provide for conducting gasolene to these several passages and to also provide in addition to these ducts or passages an additional duct passage to be fed from a separate gasolene conduit, and to provide a valve operating independently of the throttle for controlling the passage of gasolene through either of the gasolene supply passages, or to shutthem off altogether, thus making it possible to adjust the throttle to a certain angle for the passage of the diiterent mixtures. and with the throttle thus set, to dilute or richen the mixture delivered through all of the ducts which are exposed, this dilution or enriching of the mixture being accomplished without changing the position of-the throttle, that is, without exposing more of the ducts of the distributer, or shutting off any ofthe ducts. \Vith this construction. it is not necessary to use such a small drill for the ducts, as it is possible to restrict the flow of gasolene to the ducts, and thereby reduce the amount flowing therethrough to the desired quantity. Thus, theamount of gaso lene permitted to discharge from the ducts is controlled first by regulating the position of the throttle to open a more or less number of ducts, and second,by the separate valve to control the amountof gasolene,- which flows to supply the ducts. This additional valve may also be entirely c'losed when it is desired to completely stop the flow of gasolene and economize,' incoasting.

cal casing, within which is located the throtai tlewhic-h consists of a revolublc cylindrical shell 2, having openings 3 and 4. diametrically opposite each other from the ports, and a central stationary cylindrical drum- 5 formed with a diametrical passage 6, hav

ing straight walls 7, which are parallel to the line of travel of the mixture in moving from thedist-rilmter 8 to the upper chamber 9 of the carburcter, as clearly shown in Fig. 3. The throttle valve 2 has a head 10 at one end only, the left hand end fitting in a groove 11 formed in the casing 1, and the a considerable diameter to give the necessary rigidity and formed on a shaft 13 journaled in the casing 1 and operated by a lever 14-. The inner end 14 of shaft 13 is journaled in the drum 5. The shell 2 operates in the annular space formed between the stationary drum 5 and casing 1, and the ports 3 and 4E therein are formed, as indicated in Fig. 7, each having a curved edge 15, which is so proportioned as to give a quick opening for a relatively small movement of the valve at the initial opening movements and to decrease the rapidity of openin of the ducts of the distributer as the thrott e is adjusted further, the curvature of said edge increasing in degree from end to end of the shell for that purpose.

The distributer 8 is located below the throttle, and is provided with a series of ducts-17, all of which communicate at the bottom with a horizontal channel 18, which receives gasolene from a passage 19. One of the ducts-17 is always open by reason of the cutaway portion 20 in the throttle, as

clearly shown in Figs. 4 and 7 In addition to the ducts 17 and 17 1 provide a special duct 21, which is also always open by reason of the opening 20. The duct 21 receives.

.75 head 10 is secured to a thin hub 12 having with, the conduit 19 being shown in dotted lines in Fig.6. below a conduit Both conduits 19 and 23 communicate with a vering thefuel up through said ducts when the.

throttle is closed; and the discharge ends of the ducts 17 and 21 may extend above the level ofthe discharge ends of the ducts 17- so as to more readily discharge through the cut away portion 20.- I

' The lower end-0f the vertical passage 21 communicates with the float chamber 28, as

"clearly shown in Fig. 5. As'the particular construction of the float chamber and parts associated therewith does not form part of the present invention, description of the same is unnecessary.

Air 's admitted to the distributing chamber 30 through an air inlet passage 31, and an adjusting screw 32 extends into the dis- .tributer chamber near the upper end thereof, and in line with the distributerpassages 17 and 21 and may be adjusted to control the amount of'air admitted to these two passages alone.

The distributor 8 is spaced apart trom the transverse walls ofthe distributer chamher 30 to form passages on both sides of thedistributer, the ad antage being that when the throttle valve 2 is so adjusted as to open both sides of said passages maximum suction on the distributor can occur, whereas when the throttle valve 'is so adjusted as to close one'of said passages the suction on the distributerwill be much diminished because air will flow past the distrilniter only on one side thereof. 1

In practicaloperation. suction of the engine, to whichthe carbureter is connected. draws air through the inlet passage 31 past the fuel distributer 8 and throughthe opening 4, passage (3, opening 7 and upper chamber 9v to the engine cylinder. Assuming that an extra rich or dense mixture is desired, as when starting the engine into op- 'eration or to meet the requirements of an extra heavy load on the engine. the levers 14: and 27 will be adjusted by the operator to partly close the throttle valve and to fully open both conduits 1f). 23 so that fuel will be sucked from said conduits through the distributor ducts 17. 17 and 21 into the air passing through the distributer chamber and thereby produce a relatively rich mixture. If a less dense mixture and greater volume of mixture are desired. the lever 14: will be 0 erated to fully open the throttle valve. I a still less dense mixture and maximum volume. are desired, the lever 27 will be operated .to move the valve 25 to close the duct 23, and the denseness of the mixture maybe still further diminished by moving the valve 25 to partly close the duct 19. When it is desired to admit only air to the engine cylinder, the valve 25 will be moved to entirely close the duct 19. Ordinarily the valve will be adjustedito regulate the fiow of fuel through the duct 19 for normal running conditions, and under such conditions theoperator will move the lever 14 so as to simultaneously regulate the volume of mixture and the amount of fuel drawn from the distributer, and it-is noted that the proportions of air and fuel will remain practically unchanged for the various degrees of opening of the throttle valve when the throttle valve only is adjusted. Thus it is'seen that the volume of mixture and not the quality thereof is governed'by movement of the throttle lever 14: and-that the quality'of the mixture as regards its density is governed by movement of the lever 27.

What I claim is:

In a carbureter, a distributer chamber. a fuel distributer in the distributer chamber havinga series of ducts, a stationary drum provided with a diametrical passage therethrough in axial alinement with said ducts, and a rotative shell fitting the'outside of the drum and provided withdiametrically opposite openings designed to be brought into registration with the ends of the passage of the drum. the margin of one of said open ings being designed to close over the upper ends of the ducts.

2. In a carbureter, a casing. a distributer therein.'a throttle valve witliinthe casing above the distributer comprising a revoluble cylindrical shell provided with ports, and a stationary member within said shell supported by the casing and provided with a mixture passage.

3. In a carbureter. a casing. a-distributer therein. a throttle valve in said casing above the distributer and comprising a cylindrical shell. one end of which is closed, and the other open. the shell being provided with ports. and a stationary drum projecting into said shell and supported at one end by the casing. said drum being provided with a diametrical mixturepassage.

r. In a carburetor. a casing provided with a cylindrical enlargement, a cylindrical throttle valve in said casing. a distributer below the throttle valve. the throttle valve comprising a shell withaclosed end and an open end. a shaft rotatable in the casing. the

. shaft having a thin hub which extends into the closed end otthe throttle and secures the same to the shaft. said throttle being pro vided with ports. and a stationary drum within said shell, said drum being support- 6. In a carbureter, a casing, a distributor therein provided with a series of ducts, the

, discharge mouths of which are in line and provided with another duct, the discharge mouth of which is above said line, said dis- 'tributer being provided with a passage tor conducting gasolene to all said ducts, the

distributer being also provided with another duct and with a passage for conducting gasolene to the latter duct, the discharge mouth of the latter duct being also above the line of said series of ducts, a float chamber, both of said passages communicating with the float chamber, and a valve for closing one or both of said passages.

7 In a carbureter, a casing, a distributer therein provided with a series of ducts, the discharge mouths of which are in line and provided with; another duct, the discharge mouth of which is above said line, said distributer being provided with a passage for conducting gasolene' to all said ducts, the

distributer being also provided with an other duct and with a passage for conduct ing gasolene to the latter duct, the discharge mouth of the latter duct being also above the line of said series of ducts, a float cham-' ber, both of said passages communicating with the float chamber, avalve for closingone or both of said passages, a throttle valve above said distributer and formed with a convex face with a port therein,the edge of which is adapted to be moved across one or more of the mouths of said ducts to open or close the ducts, said port being formed to expose the two ducts of higher elevation when all of the other ducts are closed in the throttle. a

' 8. In a carbureter, a casing, a distributer thereinprovided with a series of; ducts, the discharge mouths of which are in line and provided with another duct, the discharge mouth of which is above said line said distributer being provided with apassage for conducting-gasolene to all said ducts,1 the .distributer being also provided with another duct and with a passage for conducting gasolene to the latter duct,the discharge mouth of the latter duct being also above the line said series of ducts, a float chamber, both of said passages communicating with the float chamber, a valve for closing one or both of said passages, a throttle valve above said distributer and'formed with a convex ducts.

a fuel distributer in face with a port therein, which is adapted to be moved across one -or more of the mouths of said ducts to open or close the ducts, said port being formed to expose the two ducts of higher elevation when all of the other ducts are closed in the throttle, and an adjusting screw projecting into the casing toward the distributer and under the throttle valve and in line with the two ducts having mouths of higher elevation for at one end of the shell than at the otherend and the margin of said opening being: designed to close over the upper ends oi the 10. In a carbureter, a distributer chamber, a fuel distributer in'the distributer chamber having a series of ducts, a stationary drum provided with a diametrical passage there through in axial alinement with said ducts, and a rotative shell fitting the outside of the drum and provided with diametrically opposite openings designed to be brought into registration with the ends of the passage of the drum, one edge of one of said openings extending aslan't relative to the axis off-the shell and the margin at said edge being designed to close over the upper ends of the ."ducts when the shell is rotated for that pur- 11. In a carbureter, a distributer chamber,

the distributer chamberhaving a seriesof ducts, a stationary drum provided with a therethrough in axial alinement with said ducts, and a rotative. shell fitting the outside of the drum and provided with diametrically opposite openings designed. to be brought into registration with the ends of the passage of the drum, one edge of one of said openings being curved and the margin at said edge being designed to close over the upper ends of the ducts when the shell is rotated, and the degree of curvature of said edge increasing from end to end of said opening.

12. In a carburete'r, a distributer chamber, a fuel distributer'in the distributer chamber having a series of ducts, a stationary drum provided with a diametricalpassage there'- through in axial alinement' with said ducts, and a rotative shell fitting the outside of the drum and provided with diametrically opposite openings designed to be brought into diametrical passage .7

' trolsaidother ducts at one time.

registration ivith the ends of the passage of the drum, the periphery of said .shell being adapted to .close over the upper ends of some ofthe' ducts and being spaced slightly from saidends; y

13. 111a. carbureter, a. distribu-ter cham- -.ber, a fuel-distributer. in the distributer chamber-having ajseries of ducts, a throttle "to control; some of said ducts, a conduit comiin;nicajti'ng with some 'of said ducts, another ronduitcommuicating with another of said ducts,andca valve to control both of said :'c"oi1duits.-" I

14%. In ,oarbureten a (listributer .chamber,- af'fue'l", distributeringthe distributer ,ch'amber having a plurality of cluc'ts,"atl1 rottle to' c ontrolfthe passage of air, through the distributor chamber, and a single valve to control the new of fuel to one of said ducts independentjof' the other ducts'and to con- .;15.'= In} a carbureter, a distributer Chamber,

I a ii'uelIdistributer in thedistributer chamber ghavmg a rowo'f ducts, a condu t eom'muni eating Withoneflof'said ducts, a second conduitcommunicating with the remaining ducts, means to separately. control the flow of fuel to both conduits, and "a throttle. valve rotatively'mounted above thedistribiiter and provided-With opening adapted tov regis ter' ivith-all' of said ducts and provided with a peripheralcuteaivay port-ion adjacent said oneduct-{said throttle valve being adapted.

to close over the discharge ends ofall of the ducts, excepting said one duct vwhen said Jvlalve'is turned to'm'ove the opening away from the distributer. v

16; Inja carbureter, a distribut'er. chamber,

a fuel distributor in th distri'buter chamber having a row of ducts, a conduit communi 'to close over the discharge ends of all of theducts excepting said one duct when said valve is turned to movethe opening away from the distributer;

17. In combination, a distributer chamber,

an upper chamber in axial alinement with" the distributer chamber, a cylindrical casing connectingsaid chambers to one another, a

rot ative shell fitting insideof said casing and provided with diametrically opposite openingsfadapted to register with the adjacent ends 'ofthe chambers, a stationary-drum fit ting inside-.of the shell and provided with a passage therethrough-"in axial alinement with said chambe'rs ancl a distributor inthe distributer chamber --havi.ng Qclucts discharging tovvardthe passage, the ends of said ducts being close to the..-peripheryof the shelL- In testimony whereof, I have hereunto set my hand at Los Angeles, California,'*-this 15th day of May, 1914., r y

HARRY A. .MILLER. In presence of G; T. HAC L Y, 'LORA M. BoWER's,

Copies 0mm patent 'may be obtained for'ftve' cents each, by ad drelsingfthe Commissioner of Intent:- WnhinztonJLG. 

